Question:medium
Which Vibrio species is the most halophilic (most salt tolerant)?
Which Vibrio species is the most halophilic (most salt tolerant)?
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Think of the vibrio that tolerates the highest salt, around 10 percent NaCl.
Updated On: Jun 24, 2026
- V. cholerae
- V. vulnificus
- V. alginolyticus
- V. parahaemolyticus
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: The term halophilic means salt loving. To rank the vibrios, compare the maximum sodium chloride concentration each one can grow in.
Step 2: V. cholerae is the odd one out because it is non-halophilic and grows well even with no added salt, putting it at the bottom of the salt tolerance scale.
Step 3: V. parahaemolyticus and V. vulnificus are true halophiles, but their upper limit sits around 8 percent sodium chloride.
Step 4: V. alginolyticus pushes the ceiling higher, growing in roughly 10 percent sodium chloride, which makes it the champion of salt tolerance among these species.
\[\boxed{\text{V. alginolyticus}}\]
Step 2: V. cholerae is the odd one out because it is non-halophilic and grows well even with no added salt, putting it at the bottom of the salt tolerance scale.
Step 3: V. parahaemolyticus and V. vulnificus are true halophiles, but their upper limit sits around 8 percent sodium chloride.
Step 4: V. alginolyticus pushes the ceiling higher, growing in roughly 10 percent sodium chloride, which makes it the champion of salt tolerance among these species.
\[\boxed{\text{V. alginolyticus}}\]
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